Apparatus for forcing liquids particularly for feeding steam-generators.



No. 7|4,097. Patenfed Nov. l8, l902..'

v c. 'C AILLE. APPARATUS FOR FDRCING LIQUIDS P ARTICULARLY'APPLICABLE FOR FEEDING STEAM GENERATORS.

(Application filed Jan. 28, 1902.)

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UNITED STATES PATENT OFFICE,

I CHARLES CAILLE, OF BRY-SUR-MARNE, FRANCE.

APPARATUS FOR FORCING LIQUIDS PARTICULARLY APPLICABLE FOR FEEDING STEAM-GENERATORS.

SPECIFICATION forming part of Letters Patent No. 714,097, dated November 18, 1902. Original application filed September 6, 1901, Serial No. 74,506. Divided and this application filed January 28, 1902. Serial T0 at whom it may concern; I

Be it known that I, CHARLES CAILLE, engineer, of 31 Rue de la Ppiniere, Bry-sur- Marne, Seine, in the Republic of France, (whose post-office address is the same,) have invented certain new and useful Apparatus for Forcing Liquids Particularly Applicable for the Feeding of Steam-Generators; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

The invention which is the subject of the present demand for a patent refers to an arrangement for forcing liquids particularly applicable for the feeding of steam-generators.

The apparatus 1 have invented is suitable for the feeding of any receiver-such as a boiler, for example, whatever be the pressure in this latter or the temperature of the feed liquid.

The invention is shown in detail on the accompanying drawings.

Figure 1 is a longitudinal section of the whole. Fig. 2 is an elevation of the details of the piston. Fig. 3 is a section on lines A B of Fig. 1 and O D of Fig. 2.

The apparatus consists of a cylinder of a pump f, having at its lower end a passage 9 communicating with the receiver to be fed and in which is placed a valve 0. A piston moves in this pump-cylinder.

The filling of the cylinder of the pump is done by simple descent of the liquid coming through one or more admission-pipes i from a reservoir under a head or pressure into the cylinder of the pumps and takes place immediately the piston commences its upward stroke. For this purpose the piston contains a hollow passage 1, in which is guided a valve 2, which usually under the action of its own weight leaves this passage open in such a way that a communication is established between the orifices of admission of the liquid 0 and the pressure-chamber of the cylinder of the pumpf. In order to allow the air and the vapors which have formed on the surface of the liquid during the filling to escape and to insure a complete filling of the cylinder of the pump f, and thus avoid all back pressure (N0 model.)

on the piston p, I have invented the following arrangement.

A second passage 3, taken through the piston p, is closed at its upper endthat is to say, onthe side of the admission of the liquid-by a cape. Opposite to this passage a tube 5 is erected of less diameter, open at bothends and fastened to the end of the cylinder of the pump. Beneath the lower opening of this tube there is a chamber 6, which, according to the position occupied by a nonreturn valve 7, which is placed there, communicates by a pipe 15 with the atmosphere or is shut off from it. Suppose the piston 19 to be at the end of its descending or working stroke-that is to say, resting against the lower end of the cylinder of the pump. The non-return valve 0 is closed. The valve 7 rises that is to say, it opens-immediately the piston commences its upward stroke. At the same time the valve 2 opens under the action of its own weight and the head of liquid above it. This liquid passing through the passage 1 and through the opening of the valve 2 then enters the pressure-chamber of the cylinder of the pump, which it entirely fills. Meanwhile the air and vapor which may have formed above the liquid rises into the passage 3 and redescends through the tube 5 into the chamber 6, from whence it escapes into the atmosphere by means of the pipe 23 through the opening left by the valve 7.

Under compression the valves 2 and 7 are closed by'the pressure of the liquid in the compression-chamber. The non-return valve 0 is open, and the liquid which, whatever be its temperature, has filled the cylinder of the pump by simple descent is forced through the passage 9 into the receiver to be fed.

The apparatus described can be used to compress or distribute water or any other liquid at any temperature into a receiver at any pressure whatever-f0r example, for feeding boilers or for circulating cooling-water in motors.

Referring again to the action of the valve 7, this valve 7 rises as soon as the piston commences its ascending course, owing to the ac tion of the spring,which balances it and which keeps it ordinarily open. This valve 7 closes at the descent of the piston under the action of the compression which forms in the barrel of the pump. The air is not sucked through valve 7 when the piston rises, because the liquid which enters the barrel of the pump through valve 2 drives the air and the steam through this valve by means of tube 5.

This application is a division of that filed by me September 6, 1901, Serial No. 74,506.

I claim- In combination, in an apparatus for forcing liquids, a cylinder having an inlet 71 for the water, and an outlet, a valve a controlling the outlet, an air or vapor escape valve 7, a piston having a passage 1 therethrough for the passage of the Water from the inlet to the forcing side of the said piston, a valve 2 carried by the piston controlling the said passage, said piston having also a recess 3 therein closed at one end and a pipe 5 connected with the cylinder and in line with the recess 3 to enter the same, said pipe serving to conduct the air or vapor from the pressure side of the piston to the air or vapor valve, substantially as described.

In Witness whereof I have hereunto set my hand in the presence of two witnesses.

' CHARLES CA ILLE. Witnesses:

ANDRE MORTIETER, EDWARD P. MACLEAN. 

